Physics
Grade-8
Easy

Question

The electrical appliances make noise when they are used. This is because of the _____ of their internal parts.

  1. Burning 
  2. Vibration
  3. Fusing
  4. Short circuiting

hintHint:

Electrical appliances make sounds by the vibration of their internal parts.

The correct answer is: Vibration


    The electrical appliances make noise when they are used. This is because of the vibration of their internal parts.
    • A sound is a form of mechanical kinetic energy.
    • It creates vibration when it is subjected to any force.
    • This vibration produces sound.
    • The vibration created in the internal parts of the electrical appliances makes the sound.